Number of integer compositions of n with all distinct runs.

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =7a(5) =14a(6) =26a(7) =48a(8) =88a(9) =161a(10) =294a(11) =512a(12) =970a(13) =1634a(14) =2954a(15) =5156a(16) =9119a(17) =15618a(18) =27354a(19) =46674a(20) =80130a(21) =138078a(22) =232286a(23) =394966a(24) =665552a(25) =1123231a(26) =1869714a(27) =3146410a(28) =5186556a(29) =8620936